Chimney and ventilator.



CHIMNEY AND VENTILATOB.

(Application filed Sept. 23, 1901.) (No Model.)

WITNESS 8 INVENTOI? ma Noam: PETERS co. wncruumoq wAswm-Ycm, n. c.

Nine STATES A'IFNT FFICE.

CHIMNEY AND \IENTILATOR.

SPEGIFICATION forming part of Letters Patent No. 696,724, dated April 1,1902.

I Application filed September 23, 1901. Serial No. 76,158. (No model.)

To aZZ whom it may concern:

Be it known that 1, WILLIAM DAVIS, a subject of the King of GreatBritain, residingin the county of Middlesex, England, have inventedcertain new and useful Improvements in Chimneys and Ventilators, ofwhich the following is a full and complete specification, such as willenable those skilled in the art to which it appertains to make and usethe same.

The object of this invention is to provide improved means for producinga current of air in the uptake shaft or chimney of a building or otherplace to be ventilated; and for this purpose I provide at a suitablepoint in said shaft or chimney a series of holes which are diametricallyopposite one another. Each of these holes is provided with a pivotedvalve, each of which is connected to the one diametrically opposite. Theair-currents are directed into the aforesaid holes by means of a pair ofconical shields or rims, the space between the same being divided intoas many spaces as there are holes, so as to direct the air-currents intothe said holes. By this arrangement the force of the air entering thesaid holes will produce an updraft, thereby securing more perfectventilation, and the valves being diametrically connected openalternately on the opposite sides or alternately open on one side andclose on the other,thereby preventing the egress of air on the oppositeside of the shaft.

My invention is fully disclosed in the following specification, of whichthe accompanying drawings form a part, in which the separate parts ofmyimprovement are designated by the same reference characters in each ofthe views, and in which- Figure 1 is a sectional side elevation of achimney provided with inyimprovement; Fig. 2, a view similar to Fig. 1,showing a modification; and Fig. 3, a plan view of the constructionshown in Fig. 1.

In the drawings forming part of this specification, (t represents theuptake-shaft or chimney and is provided with a suitable number of holes6, diametrically opposite one another. Each of these holes is providedwith a valve 0, pivotally connected to the inside of the shaft orchimney at 61, each of said valves being pivotally connected to thevalve diametrically opposite through the medium of the rods or levers e.The air-currents are directed into the holes 6 aforesaid by means of thetwo conical shields or rims f, the space between same being divided bysuitable plates or partitions 9 into as many spaces as there are holes.It will be seen that by this arrangement the force of the air or windentering the holes b will cause an updraft, and the valves 0 beingdiametrically connected will open on one side and close on the other,thus preventing the egress of air on the opposite side of the shaft orchimney to that in which it enters.

Referring to Fig. 2, I provide at a higher point another series of holes72, these holes being provided with valves 11, also diametrically andpivotally connected together through the medium of the rods or levers 76and pivoted to the outside of the shaft or chimney at j, so that when anupdraft is produced these valves will open on the leeward and close onthe windward side. This arrange ment adds to the efficiency of myventilator, as a strong current or draft of air is caused between thetwo series of holes, which in= duces a correspondingly strong current upthe ventilator or shaft.

It will be seen that my invention may be readily applied to shipsfunnels or other places where an upward current of air is required.

Having fully described myinvention, what I claim as new, and desire tosecure by Letters Patent, .is-

1. A chimney, updraft, or ventilator shaft provided in the oppositesides thereof with holes or openings, conical shields or rims securedthereto above and below said holes or openings, radial partitionsbetween said shields or rims and forming passages leading to said holesor openings and pivoted valves for closing said holes or openings, thediametrically opposite valves being connected, substantially as shownand described.

2. An updraft, chimney, or ventilator shaft provided withoppositely-arranged holes or openings, annular shields secured theretoabove and below said holes or openings, radial partitions placed betweensaid annularshields and forming passages leading to said holes oropenings, internal pivoted valves operating to close and open said holesor openings, the

my invention I have signed my name, in presence of the subscribing'Witnesses,this 7th day 10 of September, 1901.

WVILLIAM DAVIS.

Witnesses:

ALFRED NUTTING, H. D. J AMESON.

